I've never watched 24 even though I've heard it's great.
But it's not like I haven't been exposed to the show. You can't turn on the television. listen to the radio, or pick up a newspaper without seeing and ad for the show.
I think the basic plot is that he is somehow the only man in the world that can save America. And he does it every year - 24 hours at a time. It's a safe bet he won't die this season either.